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Whale and hockey stick

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#1 Hrundi

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Posted 15 April 2010 - 09:07 PM

NGC 4631, its satellite NGC 4627, NGC 4656 and the bright starforming knot NGC 4657.

Used my 12" dob.
The second I saw these two galaxies, I knew they'd have to be my second sketching attempt. I have to unfortunately admit that due to me wanting to maximize my time staring at the sky (since the observing season is coming to and end), I did not sketch the starfields.
I sketched them separately, mostly at x161. I'll link to the separate sketches, and attach the one where I combined them both to sort of give my low power 'eyepiece view'.

The hockey stick The whale galaxy

Attached Files



#2 mathteacher

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Posted 15 April 2010 - 09:41 PM

That looks very realistic.

#3 ladip63

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Posted 16 April 2010 - 04:28 PM

Looks really nice :D Keep up the good work.

#4 Hrundi

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Posted 16 April 2010 - 07:36 PM

Thanks :) I'm still not quite sure if this is where I want to be, sketching wise, so tips and hints would be appreciated.

#5 CarlosEH

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Posted 16 April 2010 - 07:57 PM

An excellent observation of the"Whale and the Hockey Stick." You have recorded these two galaxies very nicely. Thank you for sharing it with us all.

Carlos

#6 frank5817

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Posted 17 April 2010 - 12:23 AM

Hrundi,

Nice sketch of this pair of bright galaxies :bow:

Frank :)

#7 JayinUT

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Posted 17 April 2010 - 09:58 PM

Hrundi,

Nice capture of these two fun galaxies. I like the mottling and brightness in the upper part of the whale. Also, I have found when asking for input from others, to ask for specific areas that you want input on. It seems to be easier for people to respond to specific questions. By the way, I really am enjoying viewing your sketches so please keep them coming!

Also, if your processing your sketches digitally here is something that came to me that I am starting to incorporate into my sketches. When you refine your stars, first print a copy of the object and the field of view from an astro program like Starry Night Pro or The Sky (Stellarium may, but I'm not familiar enough with it) and then see what the magnitude of stars are for each of the stars in your sketch. Then assign a specific value for a magnitude. In GIMP for example a Mag. 13 star may be 0.7 if that reflects what I saw. Or a Mag 8 star may be a 4.5 for example. I guess come up for a scale for your stars both for when you sketch in the field, and when you refine digitally. This is something I am currently working on.
One last item, you can usually add a softglow feature to your stars also that I find to add some realism to the stars, though I know of some who don't like that added. That will be up to you.






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